But I would not want to turn Minecraft into a 3D modeling program just because some people use it that way. Similarly, I do not want some external institution to force Youtube to become a video storage platform despite some people using it that way.

From a purely journalistic perspective, it is pretty cheap to run your own site. You can use efficient video codecs and there are many cheap VPS and CDN providers. New technology like peertube and IPFS can make this even cheaper. Taking a for-profit platform like Youtube and forcing it to cater to certain needs just makes it an even more entrenched part of peoples lives. Letting Youtube make itself worse for some purposes/topics encourages users to create and use other platforms.